/*
 * Copyright 2010 Christoph Widulle (christoph.widulle@googlemail.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the
 * License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS"
 * BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */



package com.android1.amarena2d.actions.movement;

import com.android1.amarena2d.actions.base.IntervalAction;
import com.android1.amarena2d.nodes.behavior.ActionTarget;

public class AccelerateMove extends IntervalAction {

    protected float accelerateX;
    protected float accelerateY;
    protected Move move;

    public AccelerateMove(Move move, float accelerateX, float accelerateY, float duration) {
        super(duration);
        this.move = move;
        this.accelerateX = accelerateX;
        this.accelerateY = accelerateY;
    }

    public static AccelerateMove $(Move move, float accelerateX, float accelerateY, float duration) {
        return new AccelerateMove(move, accelerateX, accelerateY, duration);
    }

    @Override
    public void start(ActionTarget target) {
        assert move.getTarget() == target : "Move action has different target";
        super.start(target);
    }

    public void reset(Move move, float accelerateX, float accelerateY, float duration) {
        super.reset(duration);
        this.move = move;
        this.accelerateX = accelerateX;
        this.accelerateY = accelerateY;
    }

    @Override
    public AccelerateMove copy() {
        return AccelerateMove.$(move, accelerateX, accelerateY, duration);
    }

    @Override
    public void update(float time) {
        move.velocityX += accelerateX * time;
        move.velocityY += accelerateY * time;
    }

    @Override
    public AccelerateMove reverse() {
        return AccelerateMove.$(move, -accelerateX, -accelerateY, duration);
    }

}